The utility model discloses a with well oil recovery water injection string, including upper portion oil pipe, charge pump and cyclone, the charge pump is fixed in upper portion oil pipe below, the charge pump output communicates with cyclone's feed end, cyclone's underflow opening and lower part oil pipe intercommunication, oil pipe inside middle section in upper portion is equipped with the oil -well pump pump barrel, the plunger slides and sets up in the oil -well pump pump barrel, be equipped with first valve at oil -well pump pump barrel lower extreme, be equipped with the second valve at the plunger lower extreme, the plunger upper end is connected with the sucker rod that upwards extends, it has a plurality of exit ports to open on the plunger, overflow mouth at cyclone is equipped with the bypass pipe, the bypass pipe tip upwards extends to and communicates with upper portion oil pipe hypomere. The utility model discloses recycle two kinds of technologies after can realizing oil recovery and extraction separation of water simultaneously in with pure well, reduced lifting, handle and injecting the flow into of output water, reduced surface equipment such as separator, water injection pump, pipeline, greatly reduced production cost, improve petroleum production and oil recovery speed.